Germany to test Porsche Cayenne after media report on emissions

Germany's transport ministry is to test a Porsche SUV model following reports it could be in breach of diesel emissions limits. Der Spiegel magazine said it had tested the Cayenne V6 TDI and found its emissions were higher than allowed. Porsche has said the Spiegel test was "Implausible" and its vehicles meet emissions requirements. Der Spiegel said it had been told by a source that the Porsche Cayenne had a "Warm up mode" whose true purpose was to comply with emissions requirements. Porsche also said it had carried out tests on a comparable Cayenne V6 TDI following the Der Spiegel report and found the vehicle to comply with nitric oxide emission limits.